Ftrace Source Code Pointers

It's not necessary to understand in detail how the kernel function tracer works in order to use it or to do kernel development, but it is a pretty neat piece of code even so.

The kernel/trace directory contains general tracing code.

The include/linux/ftrace.h header file provides the function tracer interface.

The kernel/trace/ftrace.c file implements architecture independent function tracer infrastructure.

The arch/arm/kernel/ftrace.c file provides ARM architecture specific function tracer code.